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Commit b740f48a authored by Lars-Peter Clausen's avatar Lars-Peter Clausen Committed by Jonathan Cameron
Browse files

staging:iio:ad799x: Report scale as fractional value 



Move the complexity of calculating the fixed point scale to the core.

Signed-off-by: default avatarLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent c0d01412

drivers/staging/iio/adc/ad799x_core.c

+3 −5
Original line number Diff line number Diff line
@@ -163,7 +163,6 @@ static int ad799x_read_raw(struct iio_dev *indio_dev, 
{

	int ret;

	struct ad799x_state *st = iio_priv(indio_dev);

	unsigned int scale_uv;



	switch (m) {

	case IIO_CHAN_INFO_RAW:
@@ -180,10 +179,9 @@ static int ad799x_read_raw(struct iio_dev *indio_dev, 
			RES_MASK(chan->scan_type.realbits);

		return IIO_VAL_INT;

	case IIO_CHAN_INFO_SCALE:

		scale_uv = (st->int_vref_mv * 1000) >> chan->scan_type.realbits;

		*val =  scale_uv / 1000;

		*val2 = (scale_uv % 1000) * 1000;

		return IIO_VAL_INT_PLUS_MICRO;

		*val = st->int_vref_mv;

		*val2 = chan->scan_type.realbits;

		return IIO_VAL_FRACTIONAL_LOG2;

	}

	return -EINVAL;

}